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Question Number 121077 by zakirullah last updated on 05/Nov/20

Commented by zakirullah last updated on 05/Nov/20

$$\mathit{p}\mathit{l}\mathit{e}\mathit{a}\mathit{s}\mathit{e}\mathit{h}\mathit{e}\mathit{l}\mathit{p}??\upuparrows \Uparrow$$

Answered by liberty last updated on 05/Nov/20

$$\mathrm{Q}1)\mathrm{n}(\mathrm{A}\cup \mathrm{B})=\mathrm{n}\left(\mathrm{A}\right)+\mathrm{n}\left(\mathrm{B}\right)-\mathrm{n}(\mathrm{A}\cap \mathrm{B})$$$$=28+32-10=50$$

Commented by zakirullah last updated on 05/Nov/20

$$\mathit{t}\mathit{h}\mathit{a}\mathit{n}\mathit{k}\mathit{s}\mathit{b}\mathit{u}\mathit{t}\mathit{s}\mathit{o}\mathit{l}\mathit{v}\mathit{e}\mathit{a}\mathit{n}\mathit{d}\mathit{e}\mathit{x}\mathit{p}\mathit{l}\mathit{a}\mathit{i}\mathit{n}\mathit{o}\mathit{t}\mathit{h}\mathit{e}\mathit{r}\mathit{q}\mathit{u}\mathit{e}\mathit{s}\mathit{t}\mathit{i}\mathit{o}\mathit{n}\mathit{s}$$

Answered by Dwaipayan Shikari last updated on 05/Nov/20

$$Q2)n(A\cap B)=n\left(A\right)+n\left(B\right)-n(A\cap B)$$$$=8+15-18=5$$

Answered by Dwaipayan Shikari last updated on 05/Nov/20

$$n(P\cup M)=n\left(P\right)+n\left(M\right)-n(P\cap M)$$$$20=n\left(P\right)+12-4$$$$n\left(P\right)=12$$

Commented by zakirullah last updated on 05/Nov/20

$$\mathit{g}\mathit{r}\mathit{e}\mathit{a}\mathit{t}!$$

Answered by Ar Brandon last updated on 05/Nov/20

$$\mathrm{Q}3.$$$$\mathrm{n}(\mathrm{M}\cup \mathrm{P})=20,\mathrm{n}\left(\mathrm{M}\right)=12,\mathrm{n}(\mathrm{M}\cap \mathrm{P})=4$$$$\mathrm{n}(\mathrm{M}\cup \mathrm{P})=\mathrm{n}\left(\mathrm{M}\right)+\mathrm{n}\left(\mathrm{P}\right)-\mathrm{n}(\mathrm{M}\cap \mathrm{P})$$$$20=12+\mathrm{n}\left(\mathrm{P}\right)-4\Rightarrow \mathrm{n}\left(\mathrm{P}\right)=12$$

Commented by zakirullah last updated on 05/Nov/20

$$\mathit{t}\mathit{h}\mathit{a}\mathit{n}\mathit{k}\mathit{s}$$

Answered by TANMAY PANACEA last updated on 05/Nov/20

$$Q3)n(m\cup p)=n\left(m\right)+n\left(p\right)-n(m\cap p)$$$$20=12+n\left(p\right)-4$$$$n\left(p\right)=12$$

Commented by zakirullah last updated on 05/Nov/20

$$\mathit{g}\mathit{r}\mathit{e}\mathit{a}\mathit{t}\mathit{w}\mathit{o}\mathit{r}\mathit{k}\mathit{s}\mathit{i}\mathit{r}$$

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